HomeMy WebLinkAboutCP 94-02; Poinsettia Shores PA B-2; Condo Permit (CP) (8)Mestre Greve Associates
June 29, 1994
Report #94-111
Mr. Brian Murphy
Kaiza Poinsettia Corporation
7220 Avenida Encinas, Suite 200
Carlsbad, CA 92009
SUBJECT: Interior and Exterior Noise Assessment for
Poinsettia Shores, Planning Area B-2
City of Carlsbad
Dear Brian,
The purpose of this letter is to demonstrate compliance of the Poinsettia Shores Planning Area B-
2 in the City of Carlsbad with the noise related Conditions of Approval placed on the project.
The project site is located in an incorporated area of the City of Carlsbad. The project will be
located adjacent to Windrose Circle and Navigator Circle which are the collector streets in the
project vicinity. The vicinity map is shown in Exhibit 1. The project site plan is shown in
Exhibit 2. The project site will be exposed to traffic noise primarily from these interior
roadways. The project will not be exposed to any aircraft or train noise.
The City of Carlsbad specifies outdoor and indoor noise limits for residential land uses. These
standards are in terms of the Community Noise Equivalent Level (CNEL) scale. CNEL is a 24
hour time weighted annual average noise level based on the A-weighted decibel. A-weighting is a
frequency correction that correlates overall sound pressure levels with the frequency of the
human ear. Time weighting refers to the fact that noise that occurs during certain sensitive time
periods is penalized for occurring at these times. The evening time period (7 PM to 10 PM)
penalizes noises by 5 dB while nighttime (10 PM to 7 AM) noises are penalized by 10 dB. These
time periods and penalties were selected to reflect peoples sensitivity to noise as a function of
activity.
The City of Carlsbad noise standards require that outdoor living areas not exceed a noise level of
60 CNEL and that the indoor areas not exceed a noise level of 45 CNEL for residential areas.
The nearest roadways to the project site are Windrose Circle and Navigator Circle. These
roadways will be interior collector streets, and therefore, will not have sufficient traffic volumes
to create significant noise impacts. The residential lots in the project, as a result, will experience
2UO Newport Center Drive, Suite 230 • Newport Beach, CA 92660 • (714) 760-0891 • Fax (714) 760-1928
traffic noise levels below the 60 CNEL exterior noise standard. Since the homes in the project
will experience traffic noise levels of less than 60 CNEL, the buildings will also meet the interior
noise standard of 45 CNEL.
The results of the analysis indicate that the homes in the Poinsettia Shores Planning Area B-2
will comply with the City of Carlsbad exterior noise standard of 60 CNEL and interior noise
standard of 45 CNEL with no exterior or interior noise mitigation measures required.
If you have any questions or comments, please do not hesitate to call myself or Tanya Nguyen.
Sincerely,
Mestre Greve Associates
Fred Greve, P.E.
Principal
CITY OF OCEANSIDE
PACIFIC
OCEAN
CITY OF VISTA
CITY OF
SAN MARCOS
CITY OF ENCINITAS
MESTRE GREVE ASSOCIATES
Exhibit 1
Vicinity Map
MESTRE GREVE ASSOCIATES
Exhibit 2
Site Plan